Someone has experienced the same frustration with the meaning of event name and logged an idea that you may want to vote up
From my experience, if you double-click on event-name, it will be added into the viz and adds more context on what "Other" is doing.
You can get more detail out of performance recordings by following the steps:
1) Open the recording in Tableau Desktop and add a new worksheet
2) In the Dimensions or Measures pane on the left, right-click and select Show Hidden Fields.
3) You will now see a lot of new data that may provide more insights. You need to manually Unhidden any fields you want to use.
For collecting performance recordings on Tableau Server I would also advise appending the below string to the view URL:
This will disable cache from shared sessions and refresh the data in the view, so you will have a more accurate performance recording that is not dependent on cached queries and results.
I hope this information helps.
Original Thread -->Tableau Server performance recording Other event
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Thanks for the your help.
I have read that post and already voted for the idea.
Issue is that connection and query execution is taking less than 3 sec and only this event is increasing the load time to 17-18 sec and i am unable to find any related document regarding this issue.